3.2 Message Formats and Coding

08.083GPPMobile-services Switching Centre - Base Station system (MSC-BSS) Interface Layer 3 SpecificationRelease 1999TS

Tools: ARFCN - Frequency Conversion for 5G NR/LTE/UMTS/GSM

This sub-clause defines the coding and format of the messages required for the BSSMAP.

For each message there is, in sub-clause 3.2.1, a table listing the signalling elements in their order of appearance in the transmitted message.

There is no general rule for the order of signalling elements: it happens that the same elements appear in various orders depending on the message.

All the BSSMAP messages are listed in the following table:

Message name	Reference
ASSIGNMENT REQUEST	3.2.1.1
ASSIGNMENT COMPLETE	3.2.1.2
ASSIGNMENT FAILURE	3.2.1.3
BLOCK	3.2.1.4
BLOCKING ACKNOWLEDGE	3.2.1.5
CIRCUIT GROUP BLOCK	3.2.1.41
CIRCUIT GROUP BLOCKING ACKNOWLEDGE	3.2.1.42
CIRCUIT GROUP UNBLOCK	3.2.1.43
CIRCUIT GROUP UNBLOCKING ACKNOWLEDGE	3.2.1.44
CLEAR COMMAND	3.2.1.21
CLEAR COMPLETE	3.2.1.22
CLEAR REQUEST	3.2.1.20
UNBLOCK	3.2.1.6
UNBLOCKING ACK	3.2.1.7
HANDOVER CANDIDATE ENQUIRE	3.2.1.14
HANDOVER CANDIDATE RESPONSE	3.2.1.15
HANDOVER REQUEST	3.2.1.8
HANDOVER REQUIRED	3.2.1.9
HANDOVER REQUIRED REJECT	3.2.1.37
HANDOVER REQUEST ACKNOWLEDGE	3.2.1.10
HANDOVER COMMAND	3.2.1.11
HANDOVER COMPLETE	3.2.1.12
HANDOVER SUCCEEDED	3.2.1.13
HANDOVER FAILURE	3.2.1.16
HANDOVER PERFORMED	3.2.1.25
HANDOVER DETECT	3.2.1.40
RESOURCE REQUEST	3.2.1.17
RESET	3.2.1.23
RESET ACK	3.2.1.24
RESOURCE INDICATION	3.2.1.18
PAGING	3.2.1.19
OVERLOAD	3.2.1.26
MSC INVOKE TRACE	3.2.1.27
BSS INVOKE TRACE	3.2.1.28
CLASSMARK UPDATE	3.2.1.29
CLASSMARK REQUEST	3.2.1.46
CIPHER MODE COMMAND	3.2.1.30
CIPHER MODE COMPLETE	3.2.1.31
CIPHER MODE REJECT	3.2.1.48
COMPLETE LAYER 3 INFORMATION	3.2.1.32
QUEUING INDICATION	3.2.1.33
SAPI "N" REJECT	3.2.1.34
RESET CIRCUIT	3.2.1.38
RESET CIRCUIT ACKNOWLEDGE	3.2.1.39
CONFUSION	3.2.1.45
UNEQUIPPED CIRCUIT	3.2.1.47
LOAD INDICATION	3.2.1.49
VGCS/VBS SETUP	3.2.1.50
VGCS/VBS SETUP ACK	3.2.1.51
VGCS/VBS SETUP REFUSE	3.2.1.52
VGCS/VBS ASSIGNMENT REQUEST	3.2.1.53
VGCS/VBS ASSIGNMENT RESULT	3.2.1.54
VGCS/VBS ASSIGNMENT FAILURE	3.2.1.55
VGCS/VBS QUEUING INDICATION	3.2.1.56
UPLINK REQUEST	3.2.1.57
UPLINK REQUEST ACKNOWLEDGE	3.2.1.58
UPLINK REQUEST CONFIRMATION	3.2.1.59
UPLINK RELEASE INDICATION	3.2.1.60
UPLINK REJECT COMMAND	3.2.1.61
UPLINK RELEASE COMMAND	3.2.1.62
UPLINK SEIZED COMMAND	3.2.1.63
SUSPEND	3.2.1.64
RESUME	3.2.1.65
CHANGE CIRCUIT	3.2.1.66
CHANGE CIRCUIT ACKNOWLEDGE	3.2.1.67
COMMON ID	3.2.1.68
LSA INFORMATION	3.2.1.69
CONNECTION ORIENTED INFORMATION	3.2.1.70
PERFORM LOCATION REQUEST	3.2.1.71
PERFORM LOCATION RESPONSE	3.2.1.72
PERFORM LOCATION ABORT	3.2.1.73
CONNECTIONLESS INFORMATION	3.2.1.74